Big / 


CORRUGATED ASBESTOS 
ROOFING ann SEEDING 


fml@laena Nel lh mao, SVB ING 
CORRUGATED ASBESTOS 
ROOFING AND SIDING 


Copyright 1928, Eternit, Inc. 


iE RIN el line 


woORKs—St. Louis, Mo. 


St. Louis Philadelphia 
Houston Jacksonville 
New Orleans 


SALES OFFICES IN 


Eternit Bzg-Seven Corrugated Asbestos Sheets on 


skeleton-framed buildings are weather- 


proof, fire-proof, permanent, free 


from maintenance 


COSTS 


GENERAL MANAGER 


WHAT DOES THE? Opveratine Ofrficiar 


DESIGNING ENGINEER 


demand of industrial roofing and siding? 


The General 
Manager 


The 
Operating 
Officzal 


The 
Constructzon 
Engeneer 


THE carrying charges on unnecessarily expensive buildings increase 
production costs to a far greater degree than is generally realized. 
Fixed costs and maintenance costs of buildings afford opportunities 
for savings often far in excess of any possible labor economies. 

The materials used for roofing and siding determine to a very 
large extent the type and the cost of any building, and consequently 
its effect on production costs. 


An overbuilt plant, either as regards capacity or type of con- 
struction is extremely hard to operate at a profit. Unnecessarily heavy 
brick or concrete buildings with high fixed charges may nullify the 
best effort of the operating departments, while the factor of obsoles- 
cence frequently wipes out the bulk of an industrial investment. 

On the other hand, too cheap a construction will not meet operat- 
ing necessities and will add the burden of excessive maintenance costs. 

The reasonable operating requirements are that a building shall 


‘be weather-proof, fire-proof, free from condensation, resistant to 


winter cold and summer heat, and economical to maintain. Pleasing 
appearance, too, 1s an asset. 

But, above all, these qualities must be permanent and enduring. 
Materials that require frequent painting, corrode, or break under load 
or vibration are expensive handicaps to the operating department— 
expensive in lost time, ruined products and costs of replacements. 


Besides these qualities, the engineer demands ease of application, 
and excellence of engineering detail, and he must be shown that the 
ability of materials to meet plant requirements is based on very solid 
facts: 

That is why the inherent qualities of Eternit are receiving such 
general recognition in the soundly popular field of skeleton framed 
industrial construction. 


Page 3 


The only two ingredients 
of Eternit Corrugated are 
Asbestos and Portland Cement 


Water-tight 


Permanent 


Strong 


Paces 


permanent 
fire-proof 
water-ti ght 


Eternit Big-Seven Corrugated Asbestos Sheets are absolutely 
water-tight, due to the cement content and method of manufacture. 


The permanence of a roofing material is determined by the basic 
qualities of 1ts components. 

Asbestos is the product of some millions of years of heat-treat- 
ment, at temperatures and pressures beside which the fumes and 
stresses of industrial service are a small thing. Platinum, perhaps, 
but certainly no common metal approximates the enduring qualities 
of asbestos. 

And no engineer need be told about the enduring qualities of 
Portland cement. Excellent concrete has been found in the oldest 
aqueducts of Rome. 


The strength of Eternit Big Seven Sheets, more than adequate for 
good construction when first made, increases with the slow ageing 
of the cement rather than diminishing under the forces of corrosion. 


Fzre-proof 


Insulation 


No Condensation 


No Damage 
From Punched 
Holes 


Wide Range of 
Ap plication 


100% Salvage 


Value 


Made entirely of Portland cement and asbestos, both absolutely 
impervious to fire, Eternit Sheets are fire-proof to an absolute degree. 


The low thermal conductivity of Eternit Sheets keeps the build- 
ings they cover remarkably cool and comfortable under a blazing sun; 
protecting perishable materials that might be spoiled by high tem- 
perature and contributing to greater efficiency of labor in the summer 
time. 


Because of the nature of this material, and its high resistance to 
heat transfer, condensation does not form on the under side of roofs. 


Eternit Sheets are securely fastened to purlins and girts without 
the necessity of punching holes through the sheets. The special 
Eternit fastener takes care of this, and the elimination of holes through 
the material unquestionably makes a more efficient covering. Holes 
through any material are weak points. 


Eternit Corrugated Asbestos Roofing and Siding is suitable for 
covering all sizes and types of steel and wood skeleton framed in- 
dustrial buildings—the only building type that meets all of the re- 
quirements of low cost, quick construction, and ease of application. 


Eternit Sheets are easily sawn into new shapes and thus may 
readily be removed and re-applied in new construction. 

Because of this flexibility and because punched holes are un- 
necessary, Eternit Sheets after years of service are re-usable at exactly 
their full value as building materials. 


Page 5 


Big Seven’s sceentafic design 
greatly increases STRENGTH 


without increasing weight 


Why 
Corrugated ? 


The 
Big Seven 


Corrugation 


Light-Weight 


Big Seven Sheets 
Support Over 
250 Lbs. per 
Square Foot on 
a 45” Span 


Page 6 


The corrugated section is the ideal structural form for industrial 
roofing and siding. Corrugating a flat sheet greatly increases its 
strength and rigidity, thus making it adaptable to application over 
widely spaced supports. The interlocking corrugations form efficient, 
water-tight laps and the many gutters formed by the corrugated 
troughs give a ‘‘scouring velocity’’ to rain discharge that washes the 
roof clean of dirt. 


Eternit Big Seven corrugations are nearly three times as wide 
and twice as deep as ordinarily used 1n competitive materials. Thus, 
without increasing the weight of the material, its strength and 
rigidity are increased many times, for as is well known among en- 
gineers, the strength of a beam section increases as the square of its 
depth, while its ‘‘stiffness’’ increases as the depth cubed. 


Because their scientific design gives Eternit corrugated asbestos 
sheets remarkable strength, it is possible to make them exceptionally 
light in weight, thus permitting economy in designing the support- 
ing structure. 


Eternit costs 
IL JOSS TEI YEA. 
oh AONE VARS: GOS 
ey dave Oinlhir CONE ae 


The 
Least Expensive 
Non-Corrodzble 


Covering 


No 
Mazntenance— 
By Far 

the Cheapest 


Covering 


Per Year 


Eternit Big Seven Sheets are cheaper than any other material of 
even approximately comparable qualities. As compared to other 
types of permanent coverings, or as compared to many semi-permanent 
types, Eternit simply offers much more value, actually for less money. 

As compared to corrugated galvanized iron, the cheapest covering 
ordinarily used, Eternit usually costs from one-third to one-half more 
per square, unless the job is affected by some unusual conditions. This 
refers to Colonial Gray color, and assumes a reasonably complete job 
of painting the corrugated iron. 

Only under the most favorable conditions may this painting— 
both inside and out—be omitted. One extra painting that you pay for 
but cannot keep, makes a thin steel covering cost more than Eternit. 

To paint corrugated iron coverings efficiently, each sheet must be 
painted on both sides before erection, otherwise, no paint will protect 
the sheets where they lap—a most vulnerable point for rust attack, 
and a point which is obviously impossible to protect by re-painting. 


Four dollars a square is a moderate price for inside and out re- 
painting. If a lot of damaged paint and rust must be removed, this 
cost will be doubled. It is easy to see how two or three extra paintings 
affect costs on a large building. 

And when you add to these paintings a complete replacement of 
cheap coverings, as you must in ten years of even reasonably severe 
service, then their use becomes economically absurd. 


Page 


Appearance is an zmportant factor 


Big Seven Sheets are just 
as suitable for siding 
material as for the roof. 
This illustration gives 
an idea of the clean-cut 
effect of a Big Seven 
industrial building cov- 
ered on both roof and 
Sides. 


Page 8 


SSeS 


The sheets are applied directly to the 
purlins as shown in the above illustra- 
tion. No decking is necessary. 


Right—Note how this Big Seven roof 

reflects light. It was selected for this 

building because a maximum of lighting 

efficzency was required in the interior of 
the building. 


Big Seven can be used to meet various climatic conditions. 
There zs no condensation. 


The rugged Spanish tile effect of Big Seven 
makes industrial buildings more attractive 


This large roof illustrates 
the Spanish Tile effect of 
Big Seven Corrugated As- 
bestos Sheets. Note the 
absence of the protruding 
bolts and fasteners. Side 
laps are not noticeable. 


In the illustration at the left, Big Seven Sheets are applied on a comparatively 
small roof area. No roof area is too small for Big Seven. 


Right—Two types of 
corrugated asbestos are 
pictured — Big Seven 
and the small corruga- 
tion sheet. Notice the 
pleasing Spanish Tile 
appearance of the Big 
Seven Sheets at the left. 
The side laps are not 
noticeable. The corru- 
gated asbestos with a 
small corrugation may 
be seen on the roof area 
in the extreme right of 
the picture. 


Big Seven is adaptable for 

use on buildings where 

traveling cranes are in- 
stalled. 


Big Sex 
ate applied 


low 


Here is the workman about 
to lay the sheet over the 
fasteners. There are no 


holes to drill. 


It 1s not a questi 
sheets alone. Them 
portant thing. The 
a factor that must | 


Unskilled labor 
Sheets. The special 
eners eliminate the 
special fitting. Scat 
ry. The fasteners at 
and the sheets ate 


The sheet is slipped into head lap is determ: 


place just as easily as 
lowering the hood on an 
automobile. 


Application cost 
prisingly low. 


Left—Bi, 

Sheets ¢ 

ST fitted aro1 

. em — SG oplening s 

| ee AEN windo 

R 

Scaffoldiny ts not necessary. re 
To insure absolute safety, s 
the workmen should use ¢ 
either planks or chicken- n 
ladders. fi 


Page 10 


n Sheets 


ipidly and at 


COST 


Oietne price,or thie 
lied cost is the im- 
st of application is 
carefully considered. 


in apply Big Seven 
ternit patented fast- 
rilling of holes and 
ding is not necessa- 
olted to the purlins 
sped into place. The 
d by the fastener. 


n Big Seven are sur- 


— Corner 
not neces- 
5 the large 
gation 

a tight 
r roll at 


> 
corner. 


It is possible to apply any 
number of panels at the 
same time. 


Big Seven Sheets are self- 

aligning. Unskilled labor 

can be used in the appli- 
cation. 


The special Eternit fast- 
eners insure that the proper 
head lap will be secured 


automatically. 


The side lap on Big Seven 
Sheets is one-half corruga- 
tion, or 3%", which is 
guaranteed to be absolutely 
weather-proof and water- 
tight. It is impossible for 
the workmen to make a mis- 
take in lapping the sheets. 


Facer n 


214” for 4” Thick Sheet 


238" for '/,” Thick Sheet 


SPECIFICATIONS 


Standard Sheets: 383” wide; thicknesses: 4” (weight 
1s 


4 lbs. per square foot) and 7” (weight 3 lbs. per square 
foot). 

Corrugation: 7” center to center; height 2%” and 2%”. 

Lengths: 3’, 36”, 4’, 4’6”, 5’, 6, 7’, 8’, , 10’. 

Other special lengths can be furnished. 

Colors—Colonial Gray and Indian Red. 

Purlin spacing depends essentially upon factor of 
safety desired. For ease of application and to eliminate 
necessity of holes in sheet, purlin spacing of 48” center 
to center, with sheets 54” long, is advisable for +” 


thick material. For a wider spacing, 3” thickness 1s 
recommended. 


3814” 


Weather Exposure—35” Lap 3%" or % Corr 
: 2 2 : 


2M for 4" 


238 for 3/5” Thick Sheet 


| DIMENSIONS (O°-E- ClO°RERSUCG VAST ESDES Heletaias 


Monztor 


Main Roof and Siding 
BGiBgieeBgeg 


Types of Sheets Used on Roof Shown Above 


TYPICAL LA Y°OCVU ET) OFF | GORPR UsG7A IER D ee Sere eee 


Steel Washer’ 


Hook for — yy ~~ Lead Washer 
Steel Purlins aay 


Detail of Fastener with Clip No. 2 


pee ote re NeE Reo ee beOeRe wesel, EEL, (GsH AN: N°EE «PUR EPNS 


See Above for Ridge 


FASTENERS FOR MISC EL DA Noe OcU- See URS ENS 


‘an 


4 


-Angle Girts 


Lead Flashing 


= 


Channel Girts Wood Girts 


Fasteners for Bottom Sheets 


Pom ebeNeh Reser OTR C1O RE ReUG AT ED. S I DAN G 


Baus seiiee 


Purlin 


DIR 


VAM EO Sa g 
Y Z 


Gable Flashing 


Flat Type Eave Filler 
Sections 49” Long 


Vx, Bolt One Led 7” Lap at Ends 
One Steel Washer 


“T° Bolt—One Lead About 8" High 


One Steel Washer 
a About 11” Wide 


Eternit Apron Flashing 


MISCELLANEOUS ETERNIG FURASH UNG Dit ae 


| Ss Cap Flashing 
Lead Base Flashing 


Fastener 


Form Flashing 


Into Corrugations 


Section 
Through 
Stack 


Standard 


Fastener 


Channel Girt 


Detail of Window 


Bx Anglen| 


Welded Welded 


a GP? Ie 


—One Steel Washer 


ig Js xX ge 
Angle 


3” Clearance 


Eel SERN le beh AS Hal NeG 9D E-TAcle LS 


Corrugated asbestos is the ideal covering for roof and sidewalls of airplane 
hangars—fireproof, permanent, economical. 


